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A speculative computing paradigm that leverages quantum vacuum fluctuations—virtual particles appearing and annihilating—to perform calculations. Instead of using electrons or photons, quantum vacuum computing would use the transient states of the vacuum itself as computational bits or qubits. This could theoretically achieve massive parallelism, as every point in space is constantly fluctuating. Challenges include extreme noise, decoherence, and the need to measure virtual states without collapsing them. It remains a fringe concept, often discussed alongside zero‑point energy and retrocausality.
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